Casey Legler, a former Olympic swimmer, recently made a career change when she cut her hair and began working as a menswear model. Back in 2011, Andrej Pejic, who was born a man, made headlines when she began walking in womenswear shows (she then underwent gender reassignment surgery). Androgyny has long been a topic of discussion in fashion—from Hedi Slimane's uber-slim silhouettes to the very concept of boyfriend jeans—but the idea of gender has never been more fluid in fashion than right now. In fact, more womenswear designers took inspiration from men's staples and placed them on high-fashion runways this season than ever before.

For Fall-Winter 2015, numerous womenswear collections featured pieces like bomber jackets, oversized sweatshirts, even some badass lace-up shoes, that were so cool we wouldn't mind wearing them if they came in sizes big enough. Here's a look at few of our favorites: